U.S. President Joe Biden will take part in a virtual summit with the Association of Southeast Asian Nations (ASEAN) on Tuesday, the first time in four years Washington will engage at the top level with a bloc it sees as key to its strategy of pushing back against China.The U.S. embassy in Brunei told Reuters Biden will lead the U.S. delegation for the ASEAN-United States summit, part of a series of ASEAN leaders' meetings this week.The White House said Biden would discuss the "enduring" U.S. commitment to ASEAN's central role in regional affairs and new initiatives to strengthen the U.S. strategic partnership with the bloc, "as we work together to end the Covid-19 pandemic, address the climate crisis, promote economic growth, and address a range of other regional challenges and opportunities."The United States has not joined the meetings at the presidential level since Biden's predecessor, Donald Trump, attended an ASEAN-U.S. meeting in Manila in 2017.cnbc.com