 Complete the following phrase:  The situation changed with the ascension of Vasily Is successor, Vasily II r. 142562. Before long his uncle, Yuri of Zvenigorod, started to advance his claims to the throne and Monomakhs Cap. A bitter family conflict erupted and rocked the country during the whole reign. After Yuris death in 1432, the claims were taken up by his sons, Vasily Kosoy and Dmitry Shemyaka, who pursued the 