I wonder why the Kremlin is so vocal on the question whether Mr Lugovoi may be extradited to London. The Russian Federation’s Constitution (adopted in 1993), Article 10, provides (unless this translation is inaccurate): “State power in the Russian Federation is exercised on the basis of the separation of the legislative, executive and judiciary branches. The bodies of legislative, executive and judiciary powers are independent.” So the extradition decision ought to be up to the courts, not the Kremlin. As for the substantive question, Article 61(1) of the Russian Federation's Constitution provides: “The citizen of the Russian Federation may not be deported out of Russia or extradited to another state.” But it does not end there because Article 15(4) provides: "The commonly recognized principles and norms of the international law and the international treaties of the Russian Federation are a component part of its legal system. If an international treaty of the Russian Fede...