In the summer or autumn of 1231, Mikhail waged war against grand prince Vladimir III Rurikovich of Kiev who sent an appeal for help to Daniil Romanovich (Mikhail's brother-in-law).
We are told that Daniil Romanovich came and pacified the two princes.

In the autumn of 1231, Yaroslav Vsevolodovich attacked the northwest district of the Vyatichi lands.
He set fire to Serensk (which was most likely the administrative center of Mikhail's patrimony), but when he besieged Mosalsk, he failed to take it.
Yaroslav, however, refused to conclude peace which signaled to Mikhail that he was prepared to pursue his objective until Mikhail expelled the Novgorodian fugitives from his lands.
Towards the end of 1231 Vnezd Vodovik died in Chernihiv; Mikhail had been bound to support Vodovik owing to their mutual oaths, and Vodovik's deaths released him from that obligation.
Therefore, tysyatskiy Boris Negochevich and his band left Chernihiv before Easter of 1232.

In 1232, troops sent by Vladimir III Rurikovich pursued and captured the princes of Bolokhoveni who had invaded Daniil Romanovich's lands and handed them over to the latter.
Mikhail and prince Iziaslav Vladimirovich of Putyvl threatened to attack Daniil Romanovich if he refused to release them.
Although Vladimir Rurikovich renewed his pact with Daniil Romanovich, Mikhail and Iziaslav Vladimirovich continued waging war against them.
In January 1235, Vladimir Rurikovich and Daniil Romanovich attacked Chernihiv, plundered the environs and set fire to the outer town hoping to make Mikhail submit.
He, however, promised Daniil Romanovich many gifts if he would desert Vladimir III Rurikovich.
Daniil Romanovich agreed and attempted to persuade Vladimir to lift the siege; but Mikhail sallied out of Chernihiv at night, caught Daniil Romanovich's troops by surprise, and killed many of them.
His brother-in-law barely escaped and was forced to withdraw to the Kievan land.

Mikhail waited until Iziaslav Vladimirovich brought the Cumans and then rode in pursuit.
The two sides clashed near Torchesk where Vladimir Rurikovich and Daniil Romanovich were defeated, and the former and many boyars were also taken captive.
Meanwhile, Mikhail's allies took Kiev where he evidently made the German merchants, who had come to Kiev via Novgorod, pay redemption-fees for their goods, and then appointed his puppet, Izyaslav Mstislavich (one of the Rostislavichi) to the throne.

At an undisclosed date after Daniil Romanovich returned to Halych from his defeat at Torchesk, its boyars rebelled and forced him to flee to Hungary.
Towards the end of September, Mikhail occupied Halych, while his comrade-in-arms, Izyaslav Vladimirovich seized Kamenets.
In the spring of 1236, Mikhail attacked Daniil Romanovich in Volhynia.
In addition to his own retinue, he was probably accompanied by Galician boyars, the princes of Bolokhoveni, and troops from the Kievan land.
He also sent Izyaslav Vladimirovich to bring the Cumans; and finally, he summoned duke Konrad I of Masovia (his maternal uncle) who had broken off friendly ties with Daniil Romanovich.
The size of his attacking force suggests that he intended to capture his brother-in-law's capital of Volodymyr-Volynskyi.
However, the Cumans plundered the Galician lands forcing Mikhail to abandon his campaign.

Meanwhile, king Béla IV of Hungary renewed his father's pact with Mikhail, and seemingly relinquished his claim to Halych and also agreed to give Mikhail military aid.
At the beginning of the summer of 1236, Daniil Romanovich and his brother Vasilko Romanovich rallied their troops to march against Mikhail.
However, he barricaded himself in Halych with his retinue, the local militia, and a contingent of Hungarians.
Dissuaded from taking Halych, they sought to assuage their frustration by seizing its northern outpost of Zvenigorod, but its citizens repelled the attack.
After the Hungarian troops had departed, Daniil Romanovich tried again; Mikhail attempted to placate his brother-in-law by giving him Przemyśl whose inhabitants had supported him in the past.

Meanwhile, grand prince
In the summer or autumn of 1231, Mikhail waged war against grand prince Vladimir III Rurikovich of Kiev who sent an appeal for help to Daniil Romanovich (Mikhail's brother-in-law). We are told that Daniil Romanovich came and pacified the two princes.
In the autumn of 1231, Yaroslav Vsevolodovich attacked the northwest district of the Vyatichi lands. He set fire to Serensk (which was most likely the administrative center of Mikhail's patrimony), but when he besieged Mosalsk, he failed to take it. Yaroslav, however, refused to conclude peace which signaled to Mikhail that he was prepared to pursue his objective until Mikhail expelled the Novgorodian fugitives from his lands. Towards the end of 1231 Vnezd Vodovik died in Chernihiv; Mikhail had been bound to support Vodovik owing to their mutual oaths, and Vodovik's deaths released him from that obligation. Therefore, tysyatskiy Boris Negochevich and his band left Chernihiv before Easter of 1232.
In 1232, troops sent by Vladimir III Rurikovich pursued and captured the princes of Bolokhoveni who had invaded Daniil Romanovich's lands and handed them over to the latter. Mikhail and prince Iziaslav Vladimirovich of Putyvl threatened to attack Daniil Romanovich if he refused to release them. Although Vladimir Rurikovich renewed his pact with Daniil Romanovich, Mikhail and Iziaslav Vladimirovich continued waging war against them. In January 1235, Vladimir Rurikovich and Daniil Romanovich attacked Chernihiv, plundered the environs and set fire to the outer town hoping to make Mikhail submit. He, however, promised Daniil Romanovich many gifts if he would desert Vladimir III Rurikovich. Daniil Romanovich agreed and attempted to persuade Vladimir to lift the siege; but Mikhail sallied out of Chernihiv at night, caught Daniil Romanovich's troops by surprise, and killed many of them. His brother-in-law barely escaped and was forced to withdraw to the Kievan land.
Mikhail waited until Iziaslav Vladimirovich brought the Cumans and then rode in pursuit. The two sides clashed near Torchesk where Vladimir Rurikovich and Daniil Romanovich were defeated, and the former and many boyars were also taken captive. Meanwhile, Mikhail's allies took Kiev where he evidently made the German merchants, who had come to Kiev via Novgorod, pay redemption-fees for their goods, and then appointed his puppet, Izyaslav Mstislavich (one of the Rostislavichi) to the throne.
At an undisclosed date after Daniil Romanovich returned to Halych from his defeat at Torchesk, its boyars rebelled and forced him to flee to Hungary. Towards the end of September, Mikhail occupied Halych, while his comrade-in-arms, Izyaslav Vladimirovich seized Kamenets. In the spring of 1236, Mikhail attacked Daniil Romanovich in Volhynia. In addition to his own retinue, he was probably accompanied by Galician boyars, the princes of Bolokhoveni, and troops from the Kievan land. He also sent Izyaslav Vladimirovich to bring the Cumans; and finally, he summoned duke Konrad I of Masovia (his maternal uncle) who had broken off friendly ties with Daniil Romanovich. The size of his attacking force suggests that he intended to capture his brother-in-law's capital of Volodymyr-Volynskyi. However, the Cumans plundered the Galician lands forcing Mikhail to abandon his campaign.
Meanwhile, king Béla IV of Hungary renewed his father's pact with Mikhail, and seemingly relinquished his claim to Halych and also agreed to give Mikhail military aid. At the beginning of the summer of 1236, Daniil Romanovich and his brother Vasilko Romanovich rallied their troops to march against Mikhail. However, he barricaded himself in Halych with his retinue, the local militia, and a contingent of Hungarians. Dissuaded from taking Halych, they sought to assuage their frustration by seizing its northern outpost of Zvenigorod, but its citizens repelled the attack. After the Hungarian troops had departed, Daniil Romanovich tried again; Mikhail attempted to placate his brother-in-law by giving him Przemyśl whose inhabitants had supported him in the past.
Meanwhile, grand prince 
Michael of Chernigov