Without Brazil's support, Venezuela would have a hard time invading Guyana. I agree with what @CascadeOfLight@hexbear.net said, Venezuela will try to win the support of the people living in Essequiba with aid and other things. And Guyana cannot and will not respond militarily to that. I think in the end both will agree to co-administer the territory and wait for a UN referendum.
Without Brazil's support, Venezuela would have a hard time invading Guyana. I agree with what @CascadeOfLight@hexbear.net said, Venezuela will try to win the support of the people living in Essequiba with aid and other things. And Guyana cannot and will not respond militarily to that. I think in the end both will agree to co-administer the territory and wait for a UN referendum.
They straight up have to enter Brazil to reach Guyana for a military operation. Brazil would be complicit if they let Venezuela do that.