Well, I recall a bomb expert last spring claiming that pipe bombs used to booby trap buildings in Jenin were similar in detail to ones used in Northern Ireland. The expert believed that Palestinian bombmakers must have directly trained by IRA bombmakers.
Back in the day the Evil Empire used to host "symposia," or arrange "lecture tours," so terrorists from different parts of the globe could share their expertise. It would seem that sufficient ties were formed in that area that cooperation now continues without Soviet sponsorship.