A dilapidated Philippine Navy ship with Philippine troops on board is anchored off Second Thomas Shoal, known locally as Ayungin Shoal, on March 30, 2014, in the South China Sea. AP
A dilapidated Philippine Navy ship with Philippine troops on board is anchored off Second Thomas Shoal, known locally as Ayungin Shoal, on March 30, 2014, in the South China Sea. AP

Philippine boats in South China Sea blocked by coastguard