Did Russian rebels in Ukraine mistakenly shoot down the Malaysian airliner? Russian President Vladimir Putin will try to deny any responsibility, but at the very least his country bears a moral culpability for the episode, and Russia will pay a heavy diplomatic price for this tragedy.
Turkey may now regret its earlier decision to allow and support un-vetted foreign fighters into Syria through their borders. Yet, even though ISIS fighters kidnapped Turkish diplomats in Mosul, Ankara is sticking to its policy of demanding change in Syria and Iraq.
There have been renewed warnings of young Britons going to Syria and coming back as a potential threat to the UK itself. It is however, to critically assess this concern and recognise the potential threat from returning Jihadis.
The end of ambiguity about Pyongyang's nuclear capacity raises fundamental questions affecting China, the United States, and the future of international non-proliferation strategy. Indirectly, these consequences could actually work to the advantage of the West in its attempts to prevent Iran 'going nuclear'.
The UN Security Council is certain to impose sanctions on North Korea. But, since these are likely to involve – at least initially – just cutting off trade and diplomatic contacts, no significant impact is expected.