Two roadside bombs were defused near the U.S. Embassy in the Afghan capital Monday, while security forces foiled a suspected suicide car bombing near a U.S. military base in the country's south, officials said. The bombs in Kabul were found hidden in a ditch about 300 yards from the heavily guarded embassy compound, said Ehbrar Ahmad, a senior official with a police commando squad. The car bomb was foiled about a half-mile from Kandahar Airfield, the main U.S. base in southern Afghanistan, said Afghan army commander Gen. Rahmatullah Raufi.