You have to feel sorry for Huddersfield and their new manager Jan Siewert after they played their hearts out to try and get their first win in 12 games.
Iwobi should have added his second after Mkhitaryan fed him but he fired his shot into Hamer's chest, while Leno denied Diakhaby again and Huddersfield's home debutant Karlan Grant had an effort cleared off the line at the other end.
The battle for Champions League qualification looks set to go to the wire, with a single point splitting United in fourth and Arsenal in sixth, although Chelsea have a game in hand.
Significant snow, freezing rain, strong winds threatening Tuesday: Environment Canada
The snow won't be around for long but it will be a burst of heavy snow - before it switches over to either sleet or freezing rain. It could warm up enough to bring only rain, with no freezing rain or sleet, according to the National Weather Service .
Jamie Vardy sees penalty saved with his first touch against Spurs
But Son had the last word in the 90th minute as the winger raced clear to slot past Schmeichel for his 15th goal of the season. A rapid exchange of passes opened up a chance for Maddison, prompting Jan Vertonghen to rashly bundle over the midfielder.
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Prime Minister Benjamin Netanyahu commended the security forces for "apprehending - within a few hours - the abhorrent murderer". The body of Ori Ansbacher, 19, was found in the woods in the West Bank near Jerusalem on Thursday with stabbing wounds.
And they certainly tried, and in fact had more possession over the 90 minutes at 55%, and the sad truth is that that they were let down by the lack of finishing and confidence in front of goal. For all that, the hosts did not pick ways through Arsenal's three centre-backs very often, whereas Arsenal looked unsafe almost every time they tore forward.
"If we ask is it hard for us, I think it's hard, but we can".
Emery was still keen to focus on the positives of his side's win, telling Sky Sports: "Their coach said yesterday they need to run a lot, and we spoke in the season that we need to show everybody we want these three points, and run like they are running and also more".
"Defensively, the Gunners are just not very good and I've been a bit puzzled by some of Unai Emery's decisions", Lawrenson told BBC Sport. We do our work to win every game and on Saturday we did the job.