Follow our live coverage here.HOUSTON – The Trump administration may be neck-deep in its nearly month-long war on Iran but its focus on the “China threat” remains undiluted. Uncertainty continues to surround the planned summit between US President Donald Trump and his Chinese counterpart Xi Jinping.No new dates have been announced for the high-stakes meeting, which was postponed as the war broke out. The summit will provide the clearest indication of how the consequential bilateral relationship, which has deep implications for South-east Asia, is shaping up.But, in the meantime, the administration is devising new ways to sharpen its competitive edge…