The U.S. military will begin its largest-ever drills with the Philippines on Tuesday, in a series of exercises involving some 17,000 troops.
Known as the Balikatan Exercise, the drills will last for 17 days, ending April 28. In total, 17,600 troops from both the U.S. and the Philippines will participate in the exercises, some of which will involve live ammunition.
The size of the drills reflects just how seriously the U.S. is taking its growing tensions with China. Last year's version of the same drill involved half as many troops.
"It’s a big deal," Defense Secretary Lloyd Austin said of the event when it was first announced. "This is part of our effort to modernize our alliance, and these efforts are especially important as the People’s Republic of China continues to advance its illegitimate claims in the West Philippine Sea."
While the drills were planned long in advance, the timing of the Balikatan Exercise sends a message nevertheless, beginning just one day after China ended its own exercises around Taiwan.
The Chinese military had surrounded Taiwan and carried out simulated strikes against the self-governed island over the past week. The country said it was in retaliation to Taiwanese President Tsai Ing-wen's trip to the U.S., where she met with House Speaker Kevin McCarthy, R-Calif.