Every time the North launches a provocation like this, the South has no option now but to hit back at least twice as hard. If 70 homes burn in the South, 140 North Korean military outposts, supply depots and barracks should burn in turn. Cut off their fuel and food aid automatically for a month (or more) every time they attack- make it a law, so there's nothing for the North to argue about when it happens. If they threaten with nukes, sign a deal together with Japan to acquire nukes from the US/west, we're all more than happy to help you stand tall against Mr. Kim and his band of circus clowns. North Korea is falling apart and they're practically starting to eat their own fingers right now, we will not allow them to bring trouble to our close friends in the region while this is happening.
4 UN peacekeepers injured in Sinai and taken to hospital in south Israel (Haaretz)
from the article: North Korea shells South, killing 2 soldiers and prompting trade of fire