MOSCOW (Sputnik) — Voting to leave the European Union at a referendum on June 23 would be the "gamble of the century," Cameron wrote in his article in The Telegraph newspaper.
"But think of the things that have threatened us in recent years: the prospect of a nuclear Iran; Russian aggression in Ukraine; the overwhelming impact of the migration crisis; the poison of Islamist extremism and terrorism. European countries have to work together to deal with them, and it is through the EU that Britain has helped drive Europe’s response," the prime minister wrote.
Cameron pledged to hold a referendum on the issue of Britain’s EU membership as part of his party’s campaign during the general elections in May 2015. Ahead of the vote, Cameron was seeking to revise the terms of his country's membership in the bloc having outlined a number of reform demands to Brussels.
Moscow's relations with the West, deteriorated in 2014 over the Ukrainian crisis, when the European Union along with the United States as well as several other countries imposed several rounds of sanctions against Russia, accusing it of meddling in Ukrainian internal affairs. Moscow has repeatedly denied the allegations.