(Bloomberg) -- When Estonia’s much-fêted prime minister, Kaja Kallas, went to Washington in November, she didn’t just meet with White House officials. The outreach is just one example of how countries around the world are delicately — but urgently — preparing for Trump’s possible return to the White House. Still, as a veteran of Trump’s first term, Prime Minister Justin Trudeau took care to stay on good terms with him in public while his senior aides forged relationships with Trump’s staff behind the scenes. One senior EU diplomat — who put the chance of a Trump return at 50-50 — said there is a greater awareness of the bloc’s dependencies in energy and raw materials, and the need to address them. Personal ties are seen as key — something former Japanese Prime Minister Shinzo Abe grasped from the outset, according to Ichiro Fujisaki, Japan’s ambassador to the US from 2008-2012.