Nor was it without its hopes in other spheres. Maude's conquest of Baghdad produced other fruits in the East, including a welcome change in the situation in Persia. The fall of Kut in the April before had enabled the Turks to turn against the Russians and drive Baratov's adventurous force back from Khanikin into the mountains and even east of Hamadan; but Maude's advance cut the Turks off from their base at Baghdad and threatened their line of retreat to Mosul. The Turks were in a trap: Baratov resumed his advance from the north-east, while Maude pushed up from the south-west: Khanikin was the trap-door, and Halil, the Turkish commander, made skilful efforts to keep it open. A strong screen of rearguards held up the Russians at the Piatak pass, while other troops reinforced from Mosul barred Maude's advance at Deli Abbas and on the Jebel Hamrin range. By the end of March the bulk of Halil's forces were through, and Maude had to content himself with linking up with the Russians at Kizil Robat and driving the Turks from the Diala after their troops in Persia had escaped. Their junction with those from Mosul enabled Halil to resume the offensive, but his counter-attack was repulsed on 11-12 April, and Maude proceeded to extend his defences far to the north and west of Baghdad. Feluja on the Euphrates had already been occupied in March, and the Turks driven up the river to Ramadie; and on 23 April Maude completed his advance up the Tigris by the capture of Samara, where the section of the railway running north from Baghdad came to an end. Hundreds of miles separated it from the other railhead at Nisibin, and with his front pushed out on the rivers to eighty miles from Baghdad, and with the Russians in touch with his right and holding the route into Persia, Maude might well rest for the summer content with the security of his conquests. He had done single-handed what had been planned for a joint Anglo-Russian campaign, with Russia taking the lion's share (see Map, p. 177*).