Chinaís navy should speed up its development and prepare for warfare, President Hu Jintao has said. He told military personnel they should "make extended preparations for warfare". China is locked in territorial disputes with several other nations in the South China Sea. Political tension is also growing with the US, which is seeking to boost its presence in the region. After Mr Huís comments, the US said China was entitled to defend itself. "Nobodyís looking for a scrap here," said Pentagon spokesman Admiral John Kirby in quotes carried by the AFP news agency.