"The thought of 'wow, we can do it' was one we already had before the match because we were competing against a great team but we thought we could have a chance," Sagnol said when asked how he felt when Georgia went in front
In a statement, his Georgian Dream party said Ivanishvili congratulated the team and pledged the money from his charitable foundation in recognition of what he called a "historic and dream victory".
The Georgian capital Tbilisi erupted in celebration on Wednesday after the national side completed a stunning victory over Portugal that propelled them into the last 16 of the European Championship in Germany.
Georgia face a daunting tie with in-form Spain, after beating Portugal 2-0 in Gelsenkirchen and qualifying from Group F in their first-ever appearance in a major international tournament.
A teenager has been criminally charged after running half-naked across an Atlanta airport runway and jumping onto the wing of a Delta Air Lines plane that had just landed.
European champions Spain suffer a shock first defeat since March 2015, losing 1-0 at home to Georgia in their final warm-up friendly before Euro 2016 in Madrid on Tuesday.
The prosecutor of the International Criminal Court says she will investigate Russian and Georgian forces over possible war crimes.
A woman in the US state of Georgia is executed despite a number of last-ditch appeals, including one by the Pope, to try and block her execution.
An enterprising bear feeds her cubs the best meal of their lives thanks to a van full of lunches and a literal open window of opportunity.
Heavy flooding in the Georgian capital, Tbilisi kills eight people with officials warning people to stay indoors to avoid animals which escaped from a zoo.