People in Homs have said the latest attack on their city is the worst in five days of shelling, and many fear the Syrian government's forces are preparing to launch a ground assault.

Argentina has vowed to complain formally to the United Nations about Britain sending one of its most modern warships to the Falkland Islands.

Rick Santorum has won the caucuses in Colorado and Minnesota, putting his bid for the Republican presidential nomination back on track.

All Airbus A380 superjumbos will be checked for cracks in their wings after the airline Qantas discovered dozens of tiny fractures during a maintenance inspection.