Upvote:1
Communism sets to replace religion as well as national identity with itself.
Pan-Arabism sets to establish religion (Islam) and a single regional (if not necessarily national) identity, Arab culture.
Thus the two are like fire and water, they can't possibly coexist in the same sphere of influence and not be at odds.
Of course either can and will use elements of the other to achieve short term goals towards its own ultimate goals, but only temporarilly and as needed (e.g. Arab countries would happily buy weapons from the USSR to attack their neighbours, especially Israel, and the USSR would happily supply those in their efforts to destabilise the region and create anti-western sentiment that'd eventually lead to the OPEC oil embargo against the western world).
Upvote:3
Pan-Arabism is an ideology espousing the unification of the countries of North Africa and West Asia from the Atlantic Ocean to the Arabian Sea, referred to as the Arab world. It is closely connected to Arab nationalism, which asserts that the Arabs constitute a single nation. wikipedia on Pan-Arabism
In political and social sciences, communism (from Latin communis β common, universal)1 is a social, political, and economic ideology and movement whose ultimate goal is the establishment of the communist society, which is a socioeconomic order structured upon the common ownership of the means of production and the absence of social classes, money,[3][4] and the state.[5][6] wikipedia on Communism
Pan Arabism is connected to Arab Nationalism and aims for the unification of countries.
Communism is structured on the absence of the state.
Difficult to reconcile an ideology dedicated to the elimination of the state with an ideology dedicated to the creation of a state.
(Apart from that, almost all ideologies are in conflict; asking why ideology A is in tension with ideology B is kind of like asking why Red isn't Blue).
Upvote:6
The simple answer is Pan-Arabism is not opposed to nationalism. It is opposed to national borders established by the West, but not the idea that they were one people and should have one united nation - the definition of nationalism. Communism is opposed to all division - class, national, ethnic, religious, the whole nine yards, and thus it would naturally be opposed to Pan-Arabism.
Marx himself called religion "opium of the people". Islam was the driving force behind the Arabian conquests in the middle ages, and it would be impossible to fully sever pan-Arabism from Islam.
Also, while Stalin coined the term "Socialism in one country", it is a strategic maneuver, not an end goal. The claimed ultimate goal of the Soviet Union's communist revolution was still that of Marx's - breaking down all division everywhere in the world, so on the surface at least, it couldn't support Pan-Arabism.