By pulling out of a landmark deal that allowed Ukrainian grain exports through the Black Sea, Russian President Vladimir Putin is taking a gamble that could badly damage Moscow’s relations with many of its partners that have stayed neutral or even been supportive of the Kremlin's invasion of its neighbor.
Russia also has played the role of spoiler at the United Nations, vetoing a resolution on extending humanitarian aid deliveries through a key border crossing in northwestern Syria and backing a push by Mali's military junta to expel U.N. peacekeepers — abrupt moves that reflect Moscow’s readiness to raise the stakes elsewhere.
