Barack Obama has called Afghan President Hamid Karzai to detail his plans for US troops in the country.
A senior US official said the American president phoned Mr Karzai on Tuesday about his strategy to leave 9,800 troops in the country beyond 2014.
More top news
The attack on a college in Garissa, Kenya, comes a day after President Uluru Kenyatta declared: ''Kenya is safe".
The pre-trial hearing for a British banker, accused of murdering two women in Hong Kong last November, was adjourned for five weeks.
Conservationists say one of the UK's most threatened butterflies has recorded its best year for a decade following 2014's warm spring.