The UK's foreign secretary was not the only one to go in for a face-to-face confrontation with Sergei Lavrov at a G20 meeting on Wednesday.
British foreign secretary angers US Republican politician after urging the GOP "not to show the weakness displayed against Hitler".
"I do not want us to show the weakness displayed against Hitler in the 1930s."
The former US president said he could "encourage" Russia to attack Nato allies.
Troops are expected to advance to the densely-populated southern city of Rafah.
The Palestinian ambassador to the UK called the comments the "best shot in the arm".
The foreign secretary sidestepped plenty of questions from the Foreign Affairs Select Committee on Tuesday.
Foreign secretary tells MPs he is "worried" Israel is breaking international humanitarian law.
Tory leader changes election strategy, billing himself as a continuity candidate after saying "change" 30 times in his October conference speech.
House Of Cards author Michael Dobbs presses foreign secretary David Cameron to "reforge and strengthen" relations with Greece.
About David Cameron
David Cameron took office in 2010 after forming a coalition government with Nick Clegg. He has since seen the popularity of his party fall as well as internal rebellions against the alliance with the Lib Dems.