Julian Ryall wrote about foreign policy in the age of President Trump:

• South Korea is appointing a military officer whose responsible for reading Trump’s twitter feed.
• The officer will look for hints about the American President’s policy on issues relevant to South Korea.
• While Trump has never explicitly made his policy on North Korea clear, his tweets indicate that he doesn’t intend to allow North Korea to build a bomb capable of targeting the US, and that he will use China to pressure the hermit kingdom into concessions.

Read more about what foreign leaders might be able to glean from Trump’s twitter account on The Telegraph.