By Mikhail Flores and Karen Lema MANILA (Reuters) -The Philippines on Monday called the actions of Chinese vessels against its boats – including one carrying a senior Philippine military official – carrying out South China Sea resupply missions over the weekend a “serious escalation”. Manila has accused the Chinese coast guard and maritime militia of repeatedly firing water cannons at its resupply boats, causing “serious engine damage” to one, and “deliberately” ramming another. Philippine Chief of Staff of the Armed Forces Romeo Brawner said he was onboard a vessel that was both sprayed with …