Washington:  US President Barack Obama held a telephonic conversation with British Prime Minister David Cameron during which the two leaders discussed the situation in Syria and Somalia among other issues, the White has House said.

"The President and Prime Minister discussed the situation in Syria, condemning the regime's violent repression of its own citizens, and agreed to coordinate closely on efforts to pressure the Assad regime and support a transition to democracy," the White House said after the two leaders spoke on Monday.

They discussed the situation in Somalia and the status of preparations for the London Conference, which will deliberate on the problems faced by the strife-torn country on February 23, it said, adding that Obama welcomed Cameron's personal leadership on the issue.

"The President also consulted with the Prime Minister regarding the ongoing transition in Afghanistan and on the situation in the eurozone, including recent developments in Greece," the White House said.

Cameron is scheduled for a state visit to America on March 13-14 .