 Story highlights Israeli Prime Minister Benjamin Netanyahu says Hamas is responsible, "will pay" 
 
 Israel has arrested hundreds, demolished homes, closed institutions, he adds 
 
 A little-known group supporting the "Islamic State" claims responsibility for teens' deaths 
 
 The 3 teens are remembered as "gifted, pure, honest and decent" at their funeral 
 
 Mourning three Israeli teenagers at their funeral Tuesday, Israeli Prime Minister Benjamin Netanyahu promised his nation will avenge their deaths at "the hands of evil men" and show its strength in the process. Following the discovery of the missing Israeli's bodies on Monday, new details about the teenagers' abduction and murder 19 days ago while hitching home from West Bank religious schools have emerged in the Hebrew press, including the fact that investigators believe that the teenagers were killed within a few minutes of getting into a stolen car near Gush Etzion junction. Eyal Yifrah, 19, Gilad Shaar, 16, and Naftali Frenkel, 16, who also had US citizenship, went missing while hitchhiking home from their religious schools in settlements on the West Bank on 12 June. Now is a time for actions, not words." The Israeli leader noted that, already, hundreds of Hamas activists have been arrested, dozens of institutions in Gaza have closed and homes have been demolished. This is along with stepped-up airstrikes in Gaza -- Palestinian land controlled by Hamas, a militant Islamic organization that denied it is behind the abductions. Analysis, by Kevin Connolly, BBC News, Jerusalem 
 
 Israel's overnight air raids on Hamas targets in Gaza were an immediate response to a wave of missile attacks launched from the Palestinian enclave since Sunday. The Palestinian Cabinet on Tuesday claimed 12 Palestinians have been killed since the military operation to find the teens began June 13; it did not identify them by name, nor detail how or when they died. Yet Mark Negev, a spokesman for Netanyahu, suggested Monday that Abbas' Palestinian Authority bears some responsibility for what happened because "the terrorists came from areas under Palestinian Authority control and returned to territories under Palestinian Authority control." "Hamas is responsible, and Hamas will pay ... [They] were kidnapped and murdered in cold blood by wild beasts." In Hebron, meanwhile, it was reported that the Israeli military had blown up the houses of two Hamas members named by Israel as suspects in the abduction Marwan Qawasmeh and Amer Abu Eisheh – the first punitive house demolitions since Israel halted the practice in 2005. "Israel is attempting to make way for aggression against us, against the Hamas ... No Palestinian group, Hamas or any other group, has taken responsibility for the action, and thus the Israeli version can't be trusted," he added. Still, as it bears the brunt of the retaliation, the group warned that if Netanyahu "brings a war on Gaza, the gates of hell will open to him." US president Barack Obama also issued a statement saying: "As a father, I cannot imagine the indescribable pain that the parents of these teenage boys are experiencing." "From the outset, I have offered our full support to Israel and the Palestinian Authority to find the perpetrators of this crime and bring them to justice, and I encourage Israel and the PA to continue working together in that effort. "I also urge all parties to refrain from steps that could further destabilize the situation." More than 400 Palestinians were arrested, while five were killed by Israeli troops.
– After the bodies of three kidnapped Israeli teens were found near where they were last seen in the West bank, Prime Minister Benjamin Netanyahu vowed that "Hamas will pay"—and within hours, Israeli jets and helicopters began dozens of airstrikes on the Hamas-run Gaza Strip. There were at least 34 airstrikes overnight, reports the New York Times, which calls the strikes an escalation of two weeks of skirmishes that have included the firing of rockets into Israel. More: In the West Bank city of Hebron, witnesses say the Israeli military has blown up the homes of Hamas suspects Marwan Qawasmeh and Amer Abu Eisheh, in the first punitive demolitions since Israel abandoned the practice in 2005, reports the Guardian. The two suspects disappeared shortly after the abduction. According to reports in the Israeli media, investigators believe the three teens were shot dead within minutes of being kidnapped, after one of them managed to call an emergency hotline. Their bodies were found in a field near Hebron 19 days after they disappeared. A Hamas spokesman says "no Palestinian group, Hamas or any other group," has taken responsibility for the killings. He accuses Israel of using the kidnap to justify attacks on Palestinians, and warns that if Israeli forces "carry out an escalation or a war, they will open the gates of hell on themselves," the BBC reports. One of the teens held American citizenship and President Obama has issued a statement saying "as a father, I cannot imagine the indescribable pain that the parents of these teenage boys are experiencing." He also urged "all parties to refrain from steps that could further destabilize the situation." A West Bank man shot in the chest early today has become the sixth Palestinian to be killed by the Israeli military since the teenagers' disappearance sparked a huge crackdown, reports CNN.