In the meantime, the "troika" finally broke up. Bukharin and Rykov sided with Stalin while Krupskaya and Soviet Commissar of Finance Grigory Sokolnikov aligned with Zinoviev and Kamenev. The struggle became open at the September 1925 meeting of the Central Committee and came to a head at the XIV Party Congress in December 1925. With only the Leningrad Party organization behind them, Zinoviev and Kamenev, dubbed "The New Opposition", were thoroughly defeated while Trotsky refused to get involved in the fight and did not speak at the Congress.