Sharks in The Water.(International Edition; PIRATES)

Byline: Rod Nordland

In the last year, Somalia's pirates have attacked 120 vessels in the Gulf of Aden, choking commerce in a critical shipping lane (the transit route for 20 percent of the world's oil), blocking aid supplies and driving up transport costs. There are two ways to stop such attacks: restore the rule of law to Somalia, the epitome of a failed state, or blockade the country, searching every vessel that leaves its shores. One of these solutions would be hard to implement. The other is quite realistic--yet outside governments have refused to try.

The last few weeks have shown how hard it will be to defeat the pirates on the high seas, which seems like the international community's approach. When British Marines tried to board a captured fishing dhow on Nov. 11, they had to go in with guns blazing and killed one possible hostage in the process. A week later, an Indian warship opened fire on what it thought was a pirate mother ship. But the target turned out to be a Thai fishing vessel. The pirates escaped, and 15 of 16 crew members were lost. When pirates seized their most valuable prize ever on Nov. 15--the Sirius Star supertanker holding 2 million barrels of Saudi crude--everyone kept their distance.

As this suggests, Somalia's seaborne bandits are making a mockery of all efforts to stop them. The region is currently patrolled by Task Force 150, made up of the navies of 20 nations under overall U.S. command. At any given time, there are 12 to 15 warships in the area, plus aerial reconnaissance and extra U.S. and Russian warcraft shadowing the MV Faina, a Ukrainian freighter captured in September with 33 battle tanks onboard.

Yet pirates have only increased their efforts, ranging across an area bigger than the Mediterranean. The Sirius Star was taken 450 nautical miles southeast of Kenya, and with it, the Somalis now hold 300 hostages and 15 ships. Fourteen others have been released for ransom this year. Total payoffs in 2008 topped seven figures, and the pirates have demanded $25 million for the Sirius Star alone (its cargo is worth four times that).

Yet allied navies oppose the one tactic that might stop all this. "Blockade is an act of war," says U.S. Navy spokesperson Cmdr. Jane Campbell. "Even a quarantine situation, there would be an incredible resource draw needed to do that. The Somali coastline is roughly the [length] of the Eastern Seaboard of the U.S."

That's true, but Somalia's internationally recognized transitional government has invited foreign navies to do what's necessary to stop ...