The conflict in the Middle East has been dominating the headlines this month. But representatives from the nation of Estonia - in Europe's north-east - have been in Australia this week to remind leaders that the war in Europe between Ukraine and Russia grinds on. There are now concerns U-S suggestions of lifting sanctions on Russian oil producers - to ease supply pressures after Iran's attacks on the Strait of Hormuz - could undermine Ukraine's war effort.   Guest: Margus Tsahkna, Estonia's Minister for Foreign Affairs  Producer: Pip Cook, Tyler Hall