The next year was passed by Valdemar abroad, in Germany, Poland, Hungary, Italy, and France. Why he should abandon the kingdom at so critical a period has exercised the ingenuity of historians; but none of their conjectures are satisfactory; and his motions must remain shrouded in mystery. On his return, after an absence of ten months, he found his own kingdom as tranquil as Sweden was stormy. In the latter there were two parties—that which adhered to Magnus and Hako, and that which had invited Albert to ascend the throne. The former, numerically inferior, had obtained succour from Norway and Denmark, and, with this aid, had made an irruption into the provinces which held for Albert. A battle ensued, in which Magnus was made prisoner; but Hako, though desperately wounded, contrived to escape. But Valdemar recruited his party; and by his arms, no less than his intrigues, reduced Albert to such perplexity, that he was compelled, whatever the price, to propitiate the formidable Dane. Overtures were accordingly made to Valdemar by the kinsmen of Albert; and he received them with eagerness. They were, however, delusive; not one of the promises made was executed, or intended to be executed. [Sidenote: 1367 to 1370.] The influence of Albert, and of his connections, proved more disastrous to Valdemar than he could have expected. His own subjects, especially those of Jutland, who were in league with the counts of Holstein, again broke out into open rebellion. They were aided by the king of Sweden (Albert), by the duke of Mecklenburg, by the Hanse Towns, and by other enemies of Denmark. The most extraordinary circumstance is, that at this very period, when the monarchy was menaced within and from without, Valdemar again left the kingdom to pass several months abroad! Was his intention to interest the emperor and the pope in his behalf? Such has been the opinion of writers. Others, again, have attributed his departure to a formidable conspiracy, the object of which was darkly seen by him. The subject must remain in mystery. The hypothesis of a conspiracy, however, derives some confirmation from the fact, that after his departure the Hanseatic Towns, the counts of Holstein, and Albert of Sweden, made simultaneous attacks on different parts of the kingdom, and with some degree of success. In 1370, however, the minister to whom Valdemar had confided the affairs of the realm made peace with all the enemies of Denmark. [Sidenote: 1370 to 1375.]