Tensions rise as Russia and Ukraine face off.

Satellite images reveal that Russia has built extensive fortifications in Ukraine, including trenches, anti-tank ditches, and concrete barricades, in preparation for a potential Ukrainian counteroffensive. Military experts say that the southern Zaporizhzhia region and the gateway to the Crimean Peninsula are the most heavily defended areas. Ukraine has been training thousands of troops in the West to use different military assets on the battlefield in a combined way ahead of the counteroffensive. The success of the counteroffensive will depend on Ukraine's ability to carry out complex, combined operations effectively.