By June Russian scout patrols report huge Tatar invasion. 4 July major battle and Russian artillery drives Tatars off. Another large Tatar campaign, to Riazan, Tula and Kashir. Boris orders expansion of the frontier fortified lines and fortresses. 1593 AD Ottoman Sultan, Mahomet III, begins major offensive in Balkans along line from Adriatic to Black Seas, Tatar Khan sends 70,000 troops into Poland, Hungary and Moldava.
Campaigns continue in following years.
AD First Cossack attack on Azov fortress, Lesser Nogai and Kaziev Tatars mobilized against Cossacks - Sultan warns Boris about Russian fort on Terek and expanding influence in Georgia and Caucasus, also demands return of Kazan and Astrakhan. 1595-1603 AD Mohammed III, Ottoman Sultan. 1596-1606 AD Feti Girei, Khan of Crimea. AD Dosmahmet leads Azov Tatar raid on Riazan. 1598 - 1605 AD Boris Feodorovich Gudunov, Tsar of Russia.