The most important news today was not about Manafort but Papadopoulos, a foreign-policy advisor who has already pleaded guilty to lying to the FBI about his dealings with representatives of the Russian government. He is now cooperating with Mueller.
https://www.nytimes.com/2017/10/30/u...os-russia.html
The stuff about Manafort mostly predated his work prior to his joining the campaign. The meetings Papadopoulos had were during the campaign. The emails the Russians profferred may have been the same ones later offered in the June meeting at Trump Tower.
Any such efforts by a foreign power are illegal, and once higher-ups at the Trump campaign were notified about the Russian overtures, they should have informed the FBI.