The intervention of Denmark-Norway, Sweden, and Poland-Lithuania into Livonia began a period of struggle for control of the Baltic, known contemporaneously as the
dominium maris baltici. While the initial war years were characterised by intensive fighting, a period of low-intensity warfare began in 1562 and lasted until 1570 when fighting once more intensified. Denmark, Sweden, and to some extent Poland–Lithuania were occupied with the
Nordic Seven Years' War (1563–1570) taking place in the Western Baltic, but Livonia remained strategically important. In 1564, Sweden and Russia concluded a seven-years truce. Both Ivan IV and Eric XIV showed signs of
mental disorder, with Ivan IV turning against part of the Tsardom's nobility and people with the
oprichina that began in 1565, leaving Russia in a state of political chaos and civil war. The defeats of Ula and Czasniki, along with the defection of
Andrey Kurbsky, led Ivan IV to move his capital to the
Alexandrov Kremlin while the perceived opposition against him was repressed by his
oprichniki. Lithuania was prepared to split Livonia with Russia, with a view to a joint offensive to drive Sweden from the area. However, this was seen as a sign of weakness by Russian diplomats, who instead suggested that Russia take the whole of Livonia, including Riga, through the ceding of
Courland in southern Livonia and Polotsk on the Lithuanian–Russian border. The transfer of Riga, and the surrounding entrance to the
River Dvina, troubled the Lithuanians, since much of their trade depended on safe passage through it and they had already built fortifications to protect it. while the Boyars were less keen on an overall peace with Lithuania, noting the danger posed by a joint Polish-Lithuanian state. Talks were then halted and hostilities resumed upon the return of the ambassadors to Lithuania. In June 1570 a three-year truce was signed with Russia. Sigismund II, the Commonwealth's first King, died in 1572 leaving the Polish throne with no clear successor for the first time since 1382 and thus began the first
free election in Polish history. Some Lithuanian nobles, in an effort to retain Lithuanian autonomy, proposed a Russian candidate. Ivan, however, demanded the return of
Kiev, an Orthodox coronation, and a hereditary monarchy in parallel to Russia's, with his son,
Feodor, as King. The electorate rejected these demands and instead chose
Henry of Valois (
Henryk Walezy), brother of King
Charles IX of France.
Russian war with Sweden In 1564, Sweden and Russia agreed the
Treaty of Dorpat, whereby Russia recognised Sweden's right to Reval (Tallinn) and other castles, and Sweden accepted Russia's patrimony over the rest of Livonia. A seven-year truce was signed between Russia and Sweden in 1565. Both Russia and Sweden had other problems and were keen to avoid an expensive escalation of the war in Livonia. Ivan IV had requested the delivery of John's wife, the Polish-Lithuanian princess
Catherine Jagellonica, to Russia, since he had competed with John to marry into the Lithuanian-Polish royal family. In July 1569 John sent a party to Russia, led by
Paul Juusten,
Bishop of Åbo, which arrived in
Novgorod in September, following the arrival in Moscow of the ambassadors sent to Sweden in 1567 by Ivan to retrieve Catherine. Ivan refused to meet with the party himself, forcing them to negotiate instead with the Governor of Novgorod. On his return to Moscow in May 1570, Ivan refused to meet the Swedish party, and with the signing of a three-year truce in June 1570 with the Commonwealth he no longer feared war with Poland–Lithuania. Juusten was left behind while John rejected Ivan's demands, and war broke out anew.
Impact of the Northern Seven Years' War Quarrels between Denmark-Norway and Sweden led to the
Northern Seven Years' War in 1563, which ended in 1570 with the
Treaty of Stettin. Primarily fought in western and southern
Scandinavia, the war involved important naval battles fought in the
Baltic. Among them was
Pontus de la Gardie, Livonia was also affected by the naval campaign of Danish admiral
Peder Munk, who bombarded Swedish Reval (Tallinn) from sea in July 1569. The Treaty of Stettin made Denmark the supreme and dominating power in
Northern Europe, yet failed to restore the
Kalmar Union. Unfavourable conditions for Sweden led to a series of conflicts that only ended with the
Great Northern War in 1720. Sweden agreed to turn over her possessions in Livonia in return for a payment by
Holy Roman Emperor Maximilian II. Maximilian failed to pay the promised compensation, however, and thereby lost his influence on Baltic affairs. From Ivan's point of view, the treaty enabled the powers involved to form an alliance against him, now that they were no longer fighting each other. ==1570–1577: Russian dominance and the Kingdom of Livonia==