Tensions flare between Syria, Turkey; Romney supports arming rebels October 8, 2012 -- Updated 0932 GMT (1732 HKT) Opposition: At least 30 people are killed after the government shells a city U.S. presidential candidate Romney supports arming rebels "who share our values" Syrian rebels are trying to capture a military camp near the Turkish border Artillery fire flies across the Syrian-Turkish border from both directions (CNN) -- After days of Syrian projectiles falling across the border into Turkey, tensions -- and carnage -- are mounting on both sides of the border. The stray shelling has prompted Turkey to respond with threats and weapons fire, fueling concerns that the Syrian civil war will bleed into a greater regional battle. Here are the latest developments in the 19-month Syrian crisis: On the ground: Rebels say they're close to seizing a military camp In their quest to wrest control of land near the Turkish border, Syrian rebels stationed outside a military camp in Tal Abayad said they had destroyed three tanks by Monday morning. "We feel very strongly we will take (the camp) over in the next few hours," rebel fighter Abu Abdallah told CNN. Government forces have been shelling the surrounding area -- and firing mortars that fell into Turkey -- from the Tal Abayad camp, said Abdallah and Ayham Khalaf, a witness and activist. If opposition fighters take over the military camp, Abdallah said rebels will control an area that extends 45 kilometers (28 miles) south of the border of Turkey -- a country that has been sympathetic to Syria's opposition movement. On Sunday, a Syrian shell landed near a Turkish government office in Akcakale -- the same town where five Turks were killed last week in another cross-border incident. Turkish Prime Minister Recep Tayyip Erdogan said the deadly incident in Akcakale was caused "by artillery fire belonging to the Syrian regime forces." Turkey fired on Syrian government targets in response. Witness Salih Aydogan said no one was injured in the Sunday incident. As Aydogan spoke, Turkish military fired two more shells at Syria. We heard (the Turkish military) fire back immediately. They retaliated with two shots," Aydogan said. We just got lucky this time. But the violence isn't contained to Syria's northern border. Across the country, at least 32 people were killed early Monday -- including 30 in Al-Kark Al-Sharqi, which was pummeled by Syrian government shelling, the opposition Local Coordination Committees of Syria said. World reaction: U.S. presidential candidate supports arming rebels U.S. Republican presidential candidate Mitt Romney is expected to announce his support of Syrian opposition members in a foreign policy speech Monday. "In Syria, I will work with our partners to identify and organize those members of the opposition who share our values and ensure they obtain the arms they need to defeat Assad's tanks, helicopters and fighter jets," according to excerpts from Romney's prepared speech. The remarks did not say whether the United States should arm the rebels. Iran is sending arms to Assad because they know his downfall would be a strategic defeat for them. We should be working no less vigorously with our international partners to support the many Syrians who would deliver that defeat to Iran - rather than sitting on the sidelines. Romney is running against U.S. President Barack Obama, who has not explicitly called for providing arms to Syrian rebels. But in a speech last month at the U.N. General Assembly, Obama pledged American support for those working for a "common good" for Syria -- and sanctions against those causing harm. "In Syria, the future must not belong to a dictator who massacres his people," he said. If there is a cause that cries out for protest in the world today, it is a regime that tortures children and shoots rockets at apartment buildings. And we must remain engaged to assure that what began with citizens demanding their rights does not end in a cycle of sectarian violence. CNN's Amir Ahmed, Holly Yan, Gul Tuysuz, Saad Abedine and Ivan Watson and contributed to this report. October 3, 2012 -- Updated 1014 GMT (1814 HKT)