The most serious incident came just before dawn, when seven militants tried to storm the military base at Kabul's international airport.
Following a series of loud explosions that shut down arriving and departing air traffic, Afghan forces and insurgents engaged in a gun battle that went on for hours until all the enemy fighters were killed.
The Taliban later took responsibility for the assault, boasting of heavy casualties inflicted on Afghan and international security forces, although there was little evidence to back up its claim.
Meanwhile, there were reports of attempted suicide-bomb style attacks in the city of Surobi in Kabul province and in Zabul province.
Again, Afghan national forces were reportedly successful in stopping the onslaughts and prevented potentially massive casualties.
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