Which Pyotr Ilyich Tchaikovsky operas remained popular in Western countries?

While Pyotr Ilyich Tchaikovsky composed 11 operas during his career, most of them have met with limited success in Western countries. However, two of his works are notable exceptions that have found lasting appreciation in the West:

• Eugene Onegin (1879)
• The Queen of Spades (1890)

These two operas are distinguished by Tchaikovsky's characteristic ability to express clear characterization through lyrical music, maintaining the highly subjective emotional tone that defines much of his most popular orchestral work. While his other operatic works are often considered eclectic in style and subject matter, these two remain the primary exceptions to the general trend of his operas finding limited reception outside of Russia.12