Berlin ? Five weeks after a series of bombs killed 191 people on trains in Madrid, Arab television networks on Thursday aired an audiotape, purportedly of al-Qaida leader Osama bin Laden, in which the speaker offered not to attack any European nation that withdrew its troops from Muslim countries.

“I am offering a truce to European countries,” said the recorded voice, which the CIA said it believed was that of bin Laden. Addressing “our neighbors north of the Mediterranean,” he offered not to attack “any country which does not carry out an onslaught against Muslims or interfere in their affairs.”

European governments quickly rejected the offer, but analysts said the message appeared to mark a new strategy of trying to manipulate antiwar sentiment in Europe to bring pressure on governments that support the United States.

“What happened on September 11 and March 11 was your goods delivered back to you,” said the recorded voice, alluding to the 2001 attacks in the United States and the bombings of four morning rush-hour commuter trains last month in the Spanish capital.

Although Spanish authorities have said they lacked evidence of direct al-Qaida involvement in the Madrid bombings, investigators suspect that the presumed leader of the plot, Sarhane Ben Abdelmajid Fakhet, sought the assistance of an al-Qaida leader in the months preceding the attack.

On the tape, the speaker said the offer was “in response to the recent positive developments that have appeared,” an apparent reference to elections in Spain three days after the Madrid bombings.