Pence calls Lugar a friend and mentor.

Flashback Lugar and Obama were detained in Russia together in 2005 after a tour of weapons facilities and then heading to the Ukraine.

https://www.washingtonpost.com/archive/politics/2005/08/29/delegation-led-by-us-senators-detained-briefly-at-russian-airport/040051b6-6021-4ae0-9323-f78201dfd4a5/?utm_term=.6228f6b0f5ba