MONGOLIA AND TEMOjIN 339
panied them. They confronted one of
the
two Naiman khans, Buyirugh, who
ruled the mountain lineages, at Lake Kishil Bashi on the northern slopes of
the Altai. Naiman resistance was soon overcome, and Buyirugh fled north-
ward to the Upper Yenesei.
Tayang khan, the ruler of the Naiman of the steppe, who had earlier
refused to assist his brother and rival, Buyirugh, now felt himself menaced
and belatedly dispatched reinforcements to fend off further Mongolian—
Kereyid encroachments. The victors, now on their way home, encountered
the fresh Naiman contingents along the Bayidaragh, a river in the southern
foothills of the Khangai Range. Because it was dusk when the opposing
forces met, the battle was postponed until morning. If the account in the
Secret history
can be believed, Jamugha, who still secretly nursed a grudge
against his
anda,
cunningly persuaded the weak-willed Ong khan to abandon
Temiijin, leaving the latter to face the Naiman troops alone. The Kereyid
stealthily departed under cover of darkness, and only at daybreak was their
treachery discovered. The conspirators' plans, however, badly miscarried.
The Naiman reinforcements did not attack Temiijin as anticipated but moved
against the retiring Kereyid chieftain, catching him unawares. Forsaken by
Jamugha, the hard-pressed Ong khan had to request help from his recently
betrayed comrade. Temiijin mounted a rescue operation that succeeded in
extracting Ong khan from his difficult predicament. The latter was naturally
grateful to his savior and begged forgiveness. Inexplicably, Temiijin accepted
his apologies, restored the Kereyid's properties and peoples, and the two
settled their differences for the time being.
Following the Naiman campaign, Temiijin fought a
brief,
indecisive battle
with the Merkids, led by his old nemesis, Toghto'a, and then turned his
attention to the Tayichi'ud. In 1200 the Mongolian leader, with the assis-
tance of Ong khan, attacked his near kinsmen along the banks of the Onan,
inflicting heavy losses on them. Those of their leaders who fell into Mongo-
lian hands were summarily executed. Those spared, mainly women and chil-
dren, Temiijin distributed among his followers.
In the face of Temiijin's continuing successes, Jamugha, again an open
enemy, now forged an opposing coalition with himself at its
head.
Granted the
title oigiir
khan
(universal khan) along the Arghun River in 1201
by
an alliance
of twelve tribes, which included, among others, the Jadaran, Merkid,
Naiman, Oyirad, and the remnants of the Tayichi'ud, Jamugha planned an
immediate offensive. Temiijin, forewarned of
his
intention, went out to meet
his enemy in the company of
his
old but none-too-reliable ally, Ong khan. In
the ensuing confrontation, fought along the Keriilen in a blinding storm, the
Mongolian chieftain launched a determined and timely spoiling attack that
thoroughly disorganized the opposition's advance guard commanded by the
Cambridge Histories Online © Cambridge University Press, 2008