Some sort of proportionality test seems likely, whereby English courts can assert jurisdiction only if a significant share of sales (10% is one figure being bandied about) are in England.

ECONOMIST: Overdue reforms may be on the way

This might include inserting a proportionality test for EAWs to weed out trivial cases and giving judges more discretion to refuse extradition when grave human-rights concerns arise, as urged by Fair Trials International, which campaigns for extradition reform.

ECONOMIST: Opting out of the EU

On numerous occasions Israel aborted planned attacks against known terrorists because they no longer met the test of proportionality.

CENTERFORSECURITYPOLICY: The inadequacy of international law