McCain understands the growing threat from Iran.

As evidenced by Hezbollah's Iranian-directed attacks in Lebanon, the Iranian problem is not just going to go away if we would only talk nice to them. John McCain is the only candidate who fully understands the seriousness of this threat and how critically important it is to the world that Iran never acquire nuclear weapons-

“Senator Obama wants to sit down with an Iranian leader who is dedicated to wiping Israel off the map — his words,” McCain told reporters on his campaign bus. “I don’t think we should give him that kind of prestige. “Senator Obama has obviously has no national security experience, and therefore that’s reflected in his judgment on a number of those issues.” McCain was referring to Obama’s comments that he would be willing to meet with leaders of rogue nations, such as Iran, North Korea and Cuba without conditions, an idea labeled naive and irresponsible by McCain.

Iran's worst-kept-secret of a nuclear weapons program shows that Iran understands that Europe's culture of endless negotiations is is buying the time for them to develop the ultimate weapon. Iran openly threatens Israel today. One day, probably sooner than we realize, Iranian nuclear-tipped missiles will be able to reach parts of Europe. Iranian long-range missiles will be capable of reaching the USA. Everyone in the world knows what Iran is really up to, except Barack Obama who can't wait to shake Ahmejinedad's hand.

Also read this excellent column on Iran’s Shifting Strategy.