US tariffs on steel and aluminium imports from the EU, Canada and Mexico have come into force.
International condemnation of the move has grown, with French President Emmanuel Macron telling US President Trump he believes it is 'illegal'.
The European Union has promised to retaliate with tariffs on US products.
Washington says the tariffs are vital for security reasons and because of a global supply glut.
UK International Trade Secretary Liam Fox is still hoping to persuade the Trump administration to back down.
In: 'What I...
Out: ....from Europe."
Dur: 12 seconds
ALT:
Former UK cabinet minister David Mellor says retaliation is required - but may not make any difference.
In: 'It's an...
Out: ....imposition."
Dur: 34 seconds