A US military helicopter crashed near a shooting range in Chelwon, northeastern region of Seoul, South Korea.
Two explosions struck the Boston Marathon Monday, turning a festive game on Patriots' Day, a state holiday in Massachusetts, into a horrific tragedy.
The Chinese consulate general in New York confirmed on Monday that there have been no reports of overseas Chinese being killed or injured in the Boston Marathon explosions.
US President Barack Obama will meet his Republic of Korea (ROK) counterpart Park Geun-hye on May 7 to discuss bilateral ties and security issues.
UN Secretary-General Ban Ki-moon on Monday condemned the bombing at the Boston Marathon, calling it "senseless violence".
Hundreds of protesters clashed with police in the Venezuelan capital after opposition presidential candidate Henrique Capriles called for demonstrations to demand a recount of votes.
Here is a list of some of the worst bombings in the US dating to the 1800s, including some famous attempts that failed:
Obama's national security adviser met with top Russian officials in Moscow, days after the former foes exchanged Cold War-style blacklists in a row over human rights.
US Secretary of State John Kerry stopped in Chicago on Monday on his way home from Asia to visit the family of a young US diplomat who was killed in Afghanistan earlier this month.
Inmates in Chicago perform with orchestra as part of music outreach program.
The White House does not yet know who planned and carried out explosions at the Boston marathon but is handling the incident as "an act of terror".