ben wallace
The defence secretary criticised his colleagues for walking out on the prime minister.
Nadine Dorries and Jacob Rees-Mogg are still backing the under-fire prime minister.
Ben Wallace also compared the situation in Ukraine to the Nazi invasion of Poland in 1939.
Plea comes as the prime minister ditches Tory manifesto pledge to boost the armed forces budget.
"In these days of long range missiles and stealth - distance is no protection," the cabinet minister said.
General Sir Patrick Sanders says he has never seen such a clear threat to peace and democracy as the “brutal aggression” of Russian president Vladimir Putin.
The defence secretary said Vladimir Putin must not be allowed to retain any territory in the war-torn country.
Officials from both the UK and the US have claimed that the Russian president is in trouble due to his failing offensive in Ukraine.
Number 10 has blamed Kremlin "disinformation" for Ben Wallace, Priti Patel and Nadine Dorries being targeted.
Defence secretary Ben Wallace blamed Kremlin "dirty tricks" for the failed hoax attempt as home secretary Priti Patel also targeted.