Restrictions on trading in the US Steam

Faced today with this problem. North as usual after a hard day at the computer, to play a couple ice rink in CS-GO and buy keys for cases. When ordering 322 ruble, Steam gives me a warning due to restrictions on trade in the United States your purchase could not be completed, tried to buy the game at a cheap price $ 10, came out the same warning. Thinking again, restarting steam, computer and Internet, I decided to just throw on account of money, but it did not help. Digging on the forums I read that this prohibition applies only on the territory of Crimea. Question: so really the sanctions have affected igroindustriyu, do Steam stops selling games on the territory of the Russian Federation?