A Trump U-turn on Iran will raise trans- Atlantic tensions

DONALD Trump is expected to announce this week whether he will certify Iran as complying with the terms of its nuclear agreement with the West, which he has called the "worst deal ever". With growing signs that he will seek to torpedo the agreement, world leaders are engaging in frenetic diplomatic fire-fighting to try to influence his decision.

While another Trump U-turn certainly cannot be ruled out, odds are growing that he will r…