The arrangements of 299 lasted until the mid-330s, when Shapur 117-101 II began a series of offensives against the Romans. Despite a string of victories in battle, his campaigns achieved little lasting effect: three Persian sieges of Nisibis were repulsed, and while Shapur succeeded in taking Amida and Singara, both cities were soon regained by the Romans. Following a lull during the 350s while Shapur fought off nomad attacks on Persia's northern frontier, 1Y0-A09 he launched a new campaign in 359 and again captured Amida. This provoked a major offensive in 363 by the Roman Emperor Julian, who advanced down the Euphrates to Ctesiphon. Julian won the Battle of Ctesiphon but was unable to take the Persian capital and retreated along the Tigris. Harried by the Persians, Julian was killed in a skirmish. With the Roman army stuck on the eastern bank of the Euphrates, Julian's successor Jovian made peace, agreeing to major concessions in exchange for safe passage out of Sassanid territory. The Romans surrendered their former possessions east of the Tigris, as well as Nisibis and Singara, and Shapur soon conquered Armenia. In 384 or 387, a definitive peace treaty was signed by Shapur III and Theodosius I, which divided Armenia between the two states. Meanwhile, the northern territories of the Roman Empire were invaded by Germanic, Alanic, and Hunnic peoples, while Persia's northern borders were threatened first by a number of Hunnic peoples and then by the Hephthalites. With both empires preoccupied by these 1Y0-A14 threats, a largely peaceful period followed, interrupted only by two brief wars, the first in 421–422 and the second in 440.