The US says it will expand its military presence across the Pacific Rim despite budget worries and the ongoing commitments in Iraq and Afghanistan. US Defence Secretary Robert Gates, speaking in Singapore, said the US would strengthen its military ties with Australia and Singapore. He said new ships and technologies would be deployed to protect allies and shipping lanes in the region. The pledge comes despite US plans to cut military spending. Many Asian nations have become fearful of China's recent military expansion. Gates is due to step down as defence secretary at the end of June and hand over to Leon Panetta, currently the director of the CIA.