Original sentence: The 1956 war was caused by a pattern of Egyptian belligerency against Israel, culminating with the nationalization of the Suez Canal and the blockage of the canal for Israeli traffic, in their view a clear casus belli (i.an act justifying war
Edited sentence: The 1956 war was caused by a pattern of Egyptian belligerency against Israel, culminating with the nationalization of the Suez Canal and the blockage of the canal for Israeli traffic, a clear casus belli