German Chancellor Angela Merkel visits US President Donald Trump on Friday for a last-ditch European effort to prevent a transatlantic trade war and save the Iran nuclear deal. Merkel's working trip is expected to be far more business-like than this week's pomp-filled state visit by French President Emmanuel Macron, who has built a warm rapport with Trump despite stark policy differences.
Trump's lavish welcome for Macron with hugs, much back-slapping and a state dinner, contrasted sharply with a tense White House event in March last year in which Trump appeared to ignore Merkel's offer of a handshake. Despite the more sober style of Merkel, who left for Washington Thursday, her objective will be the same as Macron's - to persuade Trump to back off his dual threats of punitive measures that could spark a transatlantic trade war and scrapping the Iran nuclear deal.
Trump last month announced tariffs of 25 percent on steel and 10 percent on aluminium, claiming foreign imports were harming US national security by undermining the domestic production needed for military readiness.
After an outcry from US allies, Trump granted a temporary exemption to key partners including the European Union - but this expires on May 1. On the eve of Merkel's US visit, Berlin's hopes were dim that the EU may be spared the sweeping customs duties, to which it has vowed to retaliate, potentially setting off spiralling counter-measures.
"From today's perspective, we must assume that the tariffs will come on May 1," said a German government source. "And then we will see how we will handle it."
Trump's National Economic Council Director Larry Kudlow told CNBC Thursday that Washington would continue to exempt allied economies, including the EU, if they make concessions, citing the example of "equal treatment of automobiles".
The next looming deadline is May 12, the date by which Trump has threatened to tear up the landmark 2015 agreement to stop Iran from developing nuclear weapons in return for relief from international sanctions.
Trump has called the agreement, which Germany helped negotiate, "insane" and the "worst deal ever", demanding that its "disastrous flaws" be fixed. The EU and other signatory world powers have sought to convince Trump not to abandon the pact, warning that it was the best defence against a regional nuclear arms race.
Macron pitched the idea of seeking a separate pact to curb Iran's ballistic missile programme and support for militias in the Middle East.