He's desperate, Dan
One pundit has given his unequivocal backing, despite claiming to be a member of the same party whose leader is under attack. Yes, the Telegraph's not at all celebrated blues artiste Whinging Dan Hodges has told anyone caring to listen "Why the outrage at PM terrorist sympathiser line [question mark missing again]. Corbyn and McDonnell have openly expressed sympathy with IRA and Hamas. Matter of record". And to which I call bullshit.
Talking to Irish republicans does not equal sympathy for terrorist acts, and nor does talking to those who may be connected to radical Palestinian factions. It equals no more than a willingness for discussion. If Hodges can show that Jeremy Corbyn or John McDonnell expressed sympathy for any terrorist act, it would serve Hodges' cause rather better if he were to cite that, rather than cheerlead for Cameron's desperate and ill-judged remark.
In the meantime, perhaps Dave's allegedly favourite pundit would care to examine his own record on sympathy for terrorists. He is, after all, an unswerving supporter of all that Tony Blair stood for - including talking to some groups who were, at the time, categorised, if only by the press, as terrorists. Like Irish republicans. Had he not done so, of course, the Peace Process in Northern Ireland might not have been moved forward. But they were still classed as terrorists.
Likewise the well-publicised meetings Blair had with the then Libyan leader Muammar Gaddafi, whose regime was widely regarded as a state sponsor of terrorism. Where was Hodges' vehement opposition to those talks? There appears to have been none. So that makes Dan Hodges a "terrorist sympathiser" twice over. It is, after all, a matter of record. And now he has decided to sympathise with another, and particularly indiscriminate, form of terrorism.
By giving his total and unswerving support to Cameron, Hodges is sympathising with the PM's desire to visit aerial terrorism on those mainly civilian populations where the bombs and missiles will fall. He is a full and willing participant in cheering on a process that will kill and maim the innocent, but which has no end-game in sight, and whose participants have no idea how to deal with ISIS, other than to indulge in macho posturing and acts of bloodlust.
And Dan Hodges does his cheering on, safe in the knowledge that backing a Tory Prime Minister against the party of which he is a member is not at all disloyal, as backing the Tories in the last London Mayoral election was allegedly not. Disloyalty is only done by Ken Livingstone; Hodges isn't like that at all.
There is of course, a more straightforward explanation, and that this is yet another demonstration of intellectual bankruptcy from a floor-crossing fool who has rightly garnered the nickname "The Kelvin MacKenzie of Belsize Park".