The European decision to tighten sanctions against Iran is correct. Careful, balanced and measured pressure on Tehran is necessary as we face a particularly dangerous year for relations with the Iranian regime.

In a response to an article by Jan Techau attacking Common Security and Defence Policy, Nick Witney argues that Europe can and must take on more shared responsibility for its own security in the multipolar 21st century.

Robert Gates has rightly earned the admiration of many in the security community. But his recent criticism of European contributions to NATO fail to come to terms with changes in how European nations conceive of their own security and the role NATO has to play in defending it.

The latest Fatah/Hamas deal may get Israeli Prime Minister Netanyahu out of an awkward spot on his upcoming visit to Washington. But a Palestinian reconciliation which holds should further increase the international pressure on Israel to make the compromises necessary for Middle East peace.

It is time to get real about Libya. All the huffing and puffing of Western leaders has yet to bring Gaddafi’s house crashing down. Instead, European leaders must think about what realistic outcomes they might be able to help achieve.

Tunisians see Europe as complicit with the old regime of President Ben Ali, and were disappointed by the slow reaction of European leaders to their revolution. But they are willing to forgive, if their neighbours to the north makes amends by offering prompt and generous help as they rebuild their country.

The Lisbon summit has drawn a line under a fractious period for NATO. But as it reaches out to Russia and withdraws from Afghanistan, the alliance is still struggling to find a new purpose.

The announcement of a Franco-British defence partnership will be a watershed in European security thinking. Once that Rubicon has been crossed it will raise questions for their EU partners, and perhaps this will have a profound bearing on whether Europe can keep a seat in the global game.

Britain's defence review is deeply flawed because it is based on a self-deluding picture of the world. It brings to mind the spectacle of the Viking King, Canute, who one thousand years ago commanded the tide to stop on an English beach.

If there was ever a moment for defence ministers to pool their efforts and resources, then this is it. Defence budgets across the continent are being severely cut as austerity measures kick in. Ahead of the defence ministers' meeting in Ghent on 23-24 September, Nick Witney points out that the Lisbon Treaty offers defence ministers a ready-made ‘transnational defence cooperation’ device in the form of PESCO – and urges them to use it.

Tight budgets mean hard choices. For instance, new aircraft carriers would be lovely but they cost a lot. As the UK's Strategic Defence and Security Review reaches its final stages, Nick Witney argues that perhaps it’s time to start sharing with the French.