estaríamos lamentando
-we would be regretting
Condicional progresivo para el sujeto nosotros del verbo lamentar.

lamentar

Si hubiéramos tenido esa posibilidad en el caso de David Kato, quizás no lo estaríamos lamentando.
If we had had that possibility in the case of David Kato, perhaps we would not be mourning his loss.
Palabra del día
la guirnalda