To be honest, I don't think that we should use these developments as propaganda for a number of reasons. Firstly, we don't know all of the details involved in this military cooperation, & it's far more likely that Saudi Arabia would have taken Pakistan in to consideration when dealing with 2 nations that are hostile to each other. Things like "training" or the "exchange of expertise" are too vague to make any real judgement anyway. Secondly, our ties with Saudi Arabia aren't fragile enough to be broken immediately seeing as both countries don't just have close ties due to the relationship between the 2 governments, but also due to societal interaction & friendship. Thirdly, Saudi Arabia is increasing economic & other ties with Pakistan too, but that's going to prove to be difficult when the country isn't extremely stable. Imagine how difficult it would be for foreign investors to invest in a country suffering from corruption, nepotism, & terrorism. They are bound to look for other markets, & we would do the same had we been faced with the same conditions. Fourthly, propaganda would result in the development of unjustified hatred for another ethnic group & for their governments too. That is obviously unacceptable. A better solution is to educate the people & change the mindset that results in them having unnatural views regarding diplomacy & friendship. All of this can be accomplished by reasoning, debates, education, greater interaction with foreign cultures, etc. There needs to be some sort of a balance because we can't ruin old friendships, but at the same time we need to strengthen our relations with countries that have already established friendly diplomatic ties with us. The problem isn't Muslim unity, the problem lies in alienating other countries simply because they might have a dispute with a Muslim majority nation even if the dispute has nothing to do with Islam. Pakistanis also need to become more nationalistic, that will aid them in pursuing their own goals.