A summit aimed at reducing the risk of nuclear terrorism and involving some 50 countries is about to open in South Korea's capital, Seoul.

Senegal's President Abdoulaye Wade admits election defeat against his rival Macky Sall, state media say, signalling an end to 12 years in power.

By 2050, the global average temperature could rise by 1.4-3C above levels for late last century, a mass computer simulation suggests.

Syria's divided opposition groups are to meet in Turkey to draw up a "national pact" to back efforts to unseat President Assad's government.

Australia's Qantas Group and China Eastern Airlines agree to launch a new budget airline for the Chinese market.

Leading Indian anti-corruption activist Anna Hazare says he will launch a protest in August if the government did not investigate "allegations of corruption" against 14 ministers.

Japan shuts down another nuclear power station, bringing it a step closer to suspending atomic energy after the Fukushima disaster.

In an exclusive interview with the BBC, German Chancellor Angela Merkel says it would be a huge political mistake if debt-stricken Greece was allowed to leave the euro.