The absolute loyalty of a little boy to his under-deserving friend is what swells The Kite Runner’s heart and fuels its tragedy. So you can’t really blame Matthew Spangler’s stage adaptation of Khaled Hosseini’s 2003 bestseller for sticking faithfully to the novel’s melodramatic side. But Giles Croft’s production, a joint venture between Nottingham Playhouse and Liverpool Everyman that’s playing in between as part of the Brighton Festival, hasn’t quite found a way to balance narrative drive and emotional punch.

Compile a list of the subjects you thought may be unsuitable for a sitcom, and it will almost certainly include a person with learning difficulties, assisted suicide and an army bomb disposal team.

The public rarely sees the human cost of journalists covering war. More rarely still does it see the real civilian cost. That makes Walking Wounded a frank and refreshing insight into the world at either end of the lens. Siobhan Sinnerton’s remarkable film followed British photographer Giles Duley as he returned to Afghanistan after losing both legs and his left arm in an IED explosion two years ago this month while embedded there with the US Army’s 75^th Cavalry Regiment.

The television channels have been making documentaries about our boys, and indeed girls, in Afghanistan for the best part of a decade. We’re used by now to the imagery, which mainly consists of dust, joshing, weaponry and boredom. Prince Harry: Frontline Afghanistan was an occasion to stir an extra ingredient into the brew: dust, joshing, weaponry and boredom, plus a chap who when he loses at strip poker makes the front page of every newspaper in the western world.

Zero Dark Thirty could have easily gone by the name of the Danish thriller from last year, The Hunt, it’s so furiously single-minded. As it is, the film's striking title is a military term for half-past midnight - the timing of the Navy SEAL raid which shot dead Osama bin Laden in Pakistan on 2 May 2011. The shadowy, nail-biting recreation of that infamous operation forms the film’s finale and is its pièce de résistance.

It is a Hollywood truism that any film that begins with amateur footage of happy, smiling people ends in tears. Our War was no exception: fit young men messed about in the sun and somersaulted into the Med. However, their R&R was soon over and our boys were back in Afghanistan. As one member of Arnhem Company, 2^nd battalion Duke of Lancaster’s Regiment, so articulately put it: “I wouldn’t come here on fucking holiday.”

Group shows can be strained: the rubric can be so narrow that it has to be stretched to accommodate the artists at hand. That is one reason why Haunch of Venison's new show, Mixed Media, is so pleasing: it features contemporary sculpture with an emphasis on the varied materials in use today, a capacious but not unlimited mission. The other reason is that the work is just damned good.

Two superb exhibitions at Tate Modern bring into public view the work of Japanese artist Yayoi Kusama and Italian conceptualist Alighiero Boetti; their work is not in any way connected except that, with their singular voices, each deserves much broader recognition.

If you don't fancy any more masters-and-servants dramas on a Sunday evening, you can thank Channel 4 for bringing the excellent Homeland to its Sunday roster. Kicking off tonight, it arrives in the UK basking in Golden Globe glory, having picked up accolades for Best Drama Series and Best Actress in a Drama Series in last month's ceremony.

As if by way of riposte to Birdsong’s ever-so-pensive treatment of late, last night’s Royal Marines: Mission Afghanistan brought warfare back to the 21^st century with an uncompromising thump. In Episode 1: Deadly Underfoot, Chris Terrill joined Lima Company, 42 Commando, as they took over from their Marine colleagues at Toki base, in the Nad-e Ali district of Helmand. This was in the tenth year of the war – as the greatest of narratives would have it – and the Taliban, so Terrill assured us, were “on the back foot”.