Bring 1/2 inch water to boil in large skillet on high heat. Add beans; cover and cook 7 to 9 minutes or until tender-crisp, stirring occasionally. Drain well. Set aside.
Mix oil, garlic, cumin, mustard, fennel, and red pepper in same skillet. Cook and stir on medium heat 2 minutes or until seeds are fragrant. Add tomatoes and salt; toss to coat well.
Cook and stir 2 minutes or until tomatoes start to soften. Add beans; cook and stir 2 minutes longer or until heated through.