Munich: Amid anxiety about President Donald Trump's approach to global affairs, US officials had a message for a gathering of Europe's foreign policy elite in Germany: pay no attention to the man tweeting behind the curtain.

US lawmakers – both Democrats and Republicans – and top national security officials in the Trump administration offered the same advice publicly and privately, often clashing with Trump's Twitter stream: the United States remains staunchly committed to its European allies, is furious with the Kremlin about election interference and isn't contemplating a preemptive strike on North Korea to halt its nuclear program.

But Trump himself engaged in a running counterpoint to the message, taking aim on social media at his own national security adviser, H.R. McMaster, for not tell the Munich Security Conference that the results of the 2016 election weren't affected by Russian interference – a conclusion that is not supported by US intelligence agencies.

The determination to ignore Trump's foreign policy tweets has been bipartisan.