Milan: Alitalia's agreement to a takeover offer from Air France-KLM over the weekend has sent the Italian airline flying into political and union turbulence.

A hot issue ahead of Italy's general election on April 13-14, the deal still needs the blessing of Italy's next government and Alitalia's strike-prone unions, and there are already signs of a fight ahead.

"It's an unconditional surrender," CGIL union leader Fabrizio Solari told Italian daily La Repubblica. Unions oppose Air France-KLM's plans to cut flights and staff.

Anpac, a pilots' union, said it was ready to fight the sale, la Repubblica reported on Monday.

Some opposition politicians, led by the separatist party Northern League, equated the agreement with Air France-KLM to the Battle of Caporetto, Italy's worst military defeat during World War One and a lingering national symbol of collapse.

"It's a real Caporetto of the government and of the administrators it named," Lombardy region President Roberto Formigoni said, according to La Repubblica.

Formigoni is one of many northern Italian politicians crying foul over Air France-KLM's plans to scale back Alitalia's operations at Malpensa, Milan's hub.

Air France-KLM offered one share for every 160 shares of Alitalia, valuing its stock at 0.10 euro a share, or 138 million euros ($183.8 million) in all -- an 81 percent discount to the record low price at Friday's close.

The nearly bankrupt airline said late on Sunday it would also receive a credit line of 300 million euros from the Italian government.

The carrier also said it expects the stock swap to begin in June and that Air France-KLM intends to delist Alitalia's stock if it acquires more than 90 perecent of it.

Air France-KLM's offer also includes 608 million euros to buy back Alitalia's convertible bonds and a 1 billion euro capital increase.

The takeover would end the 60-year independence of a global Italian brand. It would also avoid the airline going broke as its cash reserves quickly dry up since the European Union has banned any more state aid.

Air France-KLM, the world's biggest airline by revenues, had initially offered 0.35 euro per share. Its binding offer is still much higher than that of Air One, a small Italian carrier that had bid one cent a share and was snubbed by Rome.

It set a deadline of March 31 for several conditions on its offer, including agreement with airports operator SEA over a 1.25 billion euros claim for damages for cutting slots at Malpensa.