(Reuters) -Russia will take legal action if the West tries to force it to default on its sovereign debt, Finance Minister Anton Siluanov told the pro-Kremlin Izvestia newspaper on Monday, sharpening Moscow’s tone in its financial wrestle with the West. Russia faces its first external sovereign default in more than a century after it made arrangements to make an international bond repayment in roubles last week, even though the payment was due in U.S. dollars. It had been due on April 4 to make a payment of $649 million to holders of two of its sovereign bonds, but the U.S. Treasury blocked the…