It's a sad fact that the departure of the British Empire from various colonial possessions frequently resulted in a power vacuum followed by deep internal conflicts which remain problematic today - Ireland, Israel, and India being three obvious examples.
Not a "sad fact". It's how the "british empire" planned it, melticulously and with great effort and cunning.
It's a result of their "divide and conquer" way of ruling, in their colonial era, and it's something they pursued afterwards in order to keep it's post colonial grip on those places. With lackeys, puppet governments et al.
Oh, and add Cyprus/Nothern Cyprus, Ethiopia/Eritrea etc to the mix.
Let's not be overly generous.
I won't speak to Ireland or Israel, but in the case of India, the political strife was not a coincidence - it was the all-but-deliberate result of the British. They actively funded terrorist groups on conflicting sides with the express goal of dividing the region not just geographically (Partition), but ideologically and politically.
(This is, of course, not too different from the US funding terrorist groups when it is politically convenient to do so, and then invading foreign countries to overthrow the rulers brought to power by those same terrorist groups, when it becomes politically convenient to do that instead.)
Can you give me some specific examples of terrorist groups? From my readings, the British just successfully managed to divide the Hindu and Muslim populations using discriminating policies (like the pig / cow oil on guns in the 1800s), and let the divisions play out. They did support Gandhi and Jinnah, but I never came across them actively funding terrorist organizations.
1. http://www.theatlantic.com/magazine/archive/1908/10/the-new-...
2. http://www.celdf.org/downloads/NATURE%20and%20EMPIRE%20-%20L...