There are increasing signs that some Ukranian operation is planned on Transnistria region. As a precaution the Russia-connected forces there should be modified as guerilla units like Hamas-Hezbollah type of ambush operations. Also some training should be given them from online about building fpv drones, attaching grenades, rpgs on fpv quad-copter drones that is if Russian support cannot reach them directly. High possibility of high Ukranian casualties in addition to the risk of focused bombing on Odessa region by Russian aviation-cruise missiles would deter and stop a possible operation against that region in my opinion.