Jonah Goldberg proposes a return of a Vatican army:

I’m not saying they should use an army for crusades for new lands or for conversion or anything like that. But why shouldn’t the Catholic Church have peacekeepers of its own? The use of force isn’t forbidden by Catholic law, I know that much. And the Swiss Guards still have weapons even on Vatican property. Why couldn’t the Pope dispatch armed soldiers to restore order, open food supplies, secure humaintarian efforts etc?

It couldn’t be worse than one under the command of the UN.

[Update at 2:21 PM EDT]

How would one amend the Treaty of Westphalia? Other than Great Britain, are the sovereign entities that signed it even in existence any more? Who (other than perhaps Italy) would object, and have legitimate grounds to, if the Vatican decided to build up, and utilize, the Swiss Guard? Of course, given the paucity of real estate they have, their biggest problem would be finding a place to house the Pope’s divisions. Though I hear there are some military bases being freed up in Germany…