WASHINGTON — Iran is prepared to “discuss” its nuclear program if the US is ready to lift some of its crippling sanctions on the regime in exchange , the country’s deputy foreign minister said over the weekend. Majid Takht-Ravanchi , Tehran’s deputy foreign minister, argued that the ball is “in America’s court to prove that they want to do a deal” and predicted the two sides will make progress if the US is sincere. “We are ready to discuss this and other issues related to our program if they