US Vice President Kamala Harris, who is running for the presidency, is ahead of her rival Donald Trump in a recent poll. Meanwhile, Ukrainian defenders attacked a Russian ferry at the Kavkaz port. Read more about what happened on July 23. Russia’s war against Ukraine: Latest Russia’s losses in Ukraine as of July 23: +1,200 troops and 57 artillery systemsUkrainian forces shoot down Russian Su-25 fighter jetMartial law and mobilization in Ukraine extended for 12th timeUkrainian defenders hit rare Russian counter-battery radar using HIMARSHarris ahead of Trump in latest social poll US Vice Presid…