When the Russian Ruble reached the limits of the bands about its managed float targets (Ru5.70/$ to Ru6.35/$) in 1997, the Russian government would intervene in the markets to stabilize the Ruble. If the exchange rate approached Ru5.70/$ the government would ________ Rubles using foreign exchange and gold, or if the exchange rate approached Ru6.35/$ they would ________ Rubles.