IRAN AND SAUDIA ARABIA HAVE AGREED TO RE-ESTABLISH TIES, RE-OPEN EMBASSIES WITHIN TWO MONTHS
Didn't know they had somewhat of a "break-up" before but I can't tell if this is worrisome or not
Break-up is downplaying it, they've engaged in various proxy wars with each other for a few decades.
Lately Saudi Arabia has been cold with US relations, and Iran is supposedly on the verge of having nuclear weapons... so indeed it seems like a new chapter in the region.
Iran and SA were are probably still are enemies. Reestablishment of ties means that relations have thawed at least a little. So this is very very good news and reduces the risk of another large-scale conflict in the Middle East.