Key developments on Oct. 19-20:
* Ukraine says it struck airfield and 'largest explosives factory' in Russia
* Russian overnight missile strike on Kryvyi Rih injures 17
* Tens of thousands of Georgians rally in support of EU accession ahead of upcoming parliamentary election
* Ukraine’s NATO membership on 'irreversible path,' G7
Ukraine confirms that explosives produced at Russian explosives factory explode as designed. It’s just a special quality testing operation.