South Korean election, California vs US federal government spat, Thailand-Cambodia border dispute

South Korean liberal politician Lee Jae-myung won the presidency.  With Korean society so polarised is this a 'poisoned chalice.'  Trump administration in a spat with California threatened to cut federal funding, in turn California governor Gavin Newsom threatened to not turn over California's federal taxes.  What is this spat all about?  Thailand and Cambodia are having a dispute over part of its shared border.  The militaries of both countries have been mobilised. What does this mean for the concept of ASEAN as a security community?