Separate incidents spark concern in Thailand resort.
Tourism Agency of Thailand (TAT) to push native gastronomy to Russian visitors.
Prayut Chan-o-cha said joint work was needed to boost the industry at the Far Eastern Forum of Economics.
Aim to double annual bilateral trade to $10 billion by 2016.
Olga Komova, 26, is secretive switch to America amid suspicion of plea bargain.
Dramatic testimony from passengers as 28 out of 43 Russian passengers were hurt in Friday's accident.
Hotel occupancy down to average 50% in third quarter, with 'sharp drop' in Russian arrivals.
Plane from Thailand to Yekaterinburg after 'power generation malfunction'.