Canadian authorities reportedly have arrested two suspects in Montreal and Toronto believed to be planning a major terrorist attack, CBC news reported April 22.

Boston Marathon bombing suspect Dzhokhar Tsarnaev has been charged with one count of using and conspiring to use a weapon of mass destruction against persons and property within the United States resulting in death and one count of malicious destruction of property by means of an explosive device resulting in death, U.S. Attorney General Eric Holder said April 22, according to a U.S. Department of Justice statement.

Peace talks between the Colombian government and the National Liberation Army, or ELN, will begin in the second week of May, El Espectador reported April 22.

Senior Chinese and U.S. military officials met in Beijing on April 22 to discuss bilateral military relations and issues of common concern, Xinhua reported.

Venezuelan President Nicolas Maduro shuffled his Cabinet, placing allies of former President Hugo Chavez in key positions of responsibility, AP reported April 22.

U.S. Defense Secretary Chuck Hagel said a $10 billion arms deal with Israel, Saudi Arabia and the United Arab Emirates sends a very clear signal to Iran that military options over its nuclear program remain on the table, Reuters reported April 21.

A U.S. drone strike killed two suspected members of al Qaeda in Yemen's Marib province on April 21, a security official said, Reuters reported.

Diplomats from 11 countries met in Istanbul on April 20 to discuss the Syrian crisis, Xinhua reported.