A Turkish group affiliated with a Syrian Alawite militia and operating on orders of Syrian intelligence, carried out a suicide attack Saturday in the Turkish city of Reyhanli, killing forty-six people. More than fifty people are still being treated in local hospitals. Reyhanli is an entry point for refugees fleeing violence in Syria. The attack will increase pressure on Turkey to become more involved in the Syrian conflict.

With the anti-regime uprising in Syria evolving into a full-fledged ethnic conflict between the Alawite minority and the Sunni majority, the Assad regime relies more and more on Shi’a allies – Iran, Hezbollah, and the al-Maliki government in Iraq — to stay in power. Over the last three months, Hezbollah has been playing a growing, and more open, role in shoring up the regime.

The United States sharply challenged claims by a UN official – who is not a member of the UN investigative commission looking into to the possible use of chemical weapons in Syria – that the rebels, rather than the Assad regime, used sarin nerve gas near the city of Aleppo on 19 March. The UN investigative commission looking into the incident distanced itself from the official’s comments.

Last Friday a federal judge reversed the ruling of  another judge and ordered that a Chicago-area teen  accused of attempting to join al Qaeda-linked militants in Syria be kept in jail until his trail rather than be released to his family.

Representative Michael McCaul (R-Texas) said theHouse Homeland Security Committee will meet next week to hear testimony from Boston Police Commissioner Ed Davis and discuss the Boston Marathon bombing response methods and its implications for homeland security. “This will be the first in a series of hearings, as part of a broader investigation into the Boston Marathon bombings,” McCaul told reporters.

Three college students have been arrested on suspicion that they helped Dzhokhar Tsarnaev destroy evidence which would have provided details about his and his brother’s preparations for the marathon bombing. One of the three then lied to police when asked about their actions. The three are likely to face charges of conspiracy to obstruct justice. One of three will also be charged with lying to federal investigators.

Raed Jaser, who is accused of planning an “al Qaeda supported” bomb attack aiming to derail a Canadian passenger train, was arrested nine years ago in Toronto and was facing deportation because he had a criminal record. Jaser is a Palestinian who grew up in the UAE. The UAE never gave his family a UAE citizenship, and they refused to take him back. The Canadian authorities say his case is not unique.

FBI investigators found female DNA on fragments from the bombs used in the Marathon attack. The finding was first reported in the Wall Street Journal. Mikhail Allakhrdov, a man who some of Tsarnaev’s family members and friends described as the mysterious “Misha” who radicalized Tamerlan, said that he had not been in contact with Tsarnaev for several years, and that he never encouraged him to take up violence. Allakhrdov, a Ukrainian Christian who converted to Islam, admitted that a few years ago he was Tsarnaev’s “spiritual tutor.”

Leaders from the Jewish Federations of North America (JFNA) and other Jewish organizations gathered last week at the first Jewish Communal Security Summit in New York to strategize with top experts in the field how best to keep the community safe.Security providers from around the country had a chance to learn about best practices in threat assessment and response in the current climate.