Reinforcements, including helicopters, sent to pressure armed group holding seven members of security forces hostage.
At least 28 Hezbollah members reportedly killed while backing Syrian military attack on strategic town near Lebanon.
Thein Sein is first leader of his country to visit White House in nearly half a century.
Two blasts 15 minutes apart claim at least four lives near justice ministry offices in provincial capital Makhachkala.
Ray Manzarek, a founding member of 1960s rock band, played on hit songs such as "Break On Through to the Other Side".
In Video
Programme Highlights
Inside Story20 May 2013 09:48 GMT
There are signs of improving relations, but can the world's two most populous nations resolve their differences?
Inside Syria19 May 2013 11:32 GMT
We look at whether the abuses allegedly committed by Syrian opposition fighters are merely isolated incidents.
Programmes
Featured
Lebanon-based militia is assisting villagers caught up in the conflict.
Two years since the start of the uprising, rebels and Assad's forces remain locked in conflict.
Ancient ruins of Mes Aynak threatened by planned Chinese mining project.
A four-part series that gives a rare insight into the country on the move, with history in tow.
Extensive coverage of war crimes tribunals and controversial calls for blasphemy laws.
In Pictures
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