Just, you know, for a comparison...

Reagan didn't remain silent on Poland:

...In mid-December 1981, the Polish government declared martial law, hoping to suppress the Solidarity uprising that started in Gdansk earlier that year. The Soviet puppet Wojciech Jaruzelski imprisoned thousands, including Solidarity leader Lech Walesa, and attempted to suppress self-determination by the Poles through force and intimidation. Then-President Ronald Reagan immediately reacted to the imposition of martial law by publicizing his conversation with Pope John Paul II the next day...

There's more...

And, from a great post on Iran by the Anchoress, Twittering Liberty...and Hope — UPDATED...

...I am a little puzzled, though, by President Obama's contention that America has no right to opine on (or ability to direct) any of Iran's business; he doesn't seem to feel the same way about Israel, after all...