War broke out again between Britain and France in May 1803 and Napoleon planned to invade England, assembling the "Grande Armée" at Boulogne. In June "The Morning Post" appealed to all newspapers to print articles for "the purpose of arousing the people to the defence of the country". Cobbett immediately began a pamphlet, "Important Considerations for the People of the Kingdom", warning the country of the consequences of a French invasion. Cobbett declined an offer of payment from the government and it was published anonymously in July. The Prime Minister, Henry Addington, ordered copies to be sent to every parish in England and it had an immediate effect on public opinion.