UKRAINE’S GOVERNMENT is set to approve a deal with America to jointly exploit Ukrainian mineral resources later today after a painful period of negotiation. The document, expected to be signed by Donald Trump and Volodymyr Zelensky during a face-to-face meeting in Washington, DC, on February 28th, pulls both leaders back from a damaging war of words. Mr Trump will doubtless declare it to be his victory. What it actually ties Ukraine down to is less clear.