ICARDA focuses its research efforts on areas with a dry summer, where precipitation in winter ranges from 200 mm to 600 mm. The Center has a global responsibility for the improvement of barley, lentil and faba bean, and a regional responsibility - in West Asia and North Africa - for the improvement of wheat chickpea and pasture and forage crops and the associated farming systems. Much of ICARDA's research is carried out on a 948-hectare farm at its headquarters at Tel Hadya, about 35 km south-west of Aleppo. ICARDA also manages other sites where it tests material under a variety of agroecological conditions in Syria and Lebanon. However, the full scope of ICARDA's activities can be appreciated only when account is taken of the cooperative research carried out with many countries in West Asia and North Africa.