Very interrsting thread, one also has too closely watch events in Yemen and Syria, Afghanistan maybe @The Ash'ari can find the specific hadiths regarding crawling on ice and the 12 000 mujahedeen from Yemen who will assist the Mehdi.
Also another hadith which mentions a power struggle in Hijaz (Saudi)? Which leads to emergence of the great Mehdi??
That narration is authentic. But it seems to be speaking more in relation to the Mahdi. The 12,000 will join him. And the power struggle could be in the Kingdom of Saudi Arabia. So watch out