MOSCOW Russian President Vladimir Putin signed decrees Wednesday restricting cash and gold exports as part of a broader campaign to combat the shadow economy and curb capital flight. Under one decree, carrying ruble cash across the border of Russia to the Eurasian Economic Union (EAEU) will be prohibited in the amount equivalent to more than $100,000 at the exchange rate of the Bank of Russia from April 1, with certain exceptions. The other decree bans the export of gold bars weighing more than