Some products are illegal in some countries, or cannot be legally imported. If I attempt to carry such a product into the country, but then honestly declare it at the border (I would like to declare 10 kg of marijuana, sir), can I be prosecuted for attempted smuggling? Or will I simply be faced with the choice of turning around or forfeiting my goods and continue without trouble?

For the sake of this question, assume the product can be legally possessed in the country of origin.

For example, methyl alcohol is readily for sale in most/all EU countries, but cannot be taken by private persons into the Eurasian Economic Union (EAEU). If I carry it with me still and honestly declare it at the border when entering the EAEU at the Brest - Terespol border, can the Belarusian police arrest me for attempting to bring products across the border illegally, or will I at worst simply have to continue without those goods (or be denied entry and keep my goods)?

Some products are illegal in some countries, or cannot be legally imported. If I attempt to carry such a product into the country, but then honestly declare it at the border (I would like to declare 50 g of marijuana, sir), can I be prosecuted for attempted smuggling? Or will I simply be faced with the choice of turning around or forfeiting my goods and continue without trouble?

For the sake of this question, assume the product can be legally possessed in the country of origin and the traveller is arriving by land.

For example, methyl alcohol is readily for sale in most/all EU countries, but cannot be taken by private persons into the Eurasian Economic Union (EAEU). If I carry it with me still and honestly declare it at the border when entering the EAEU at the Brest - Terespol border, can the Belarusian police arrest me for attempting to bring products across the border illegally, or will I at worst simply have to continue without those goods (or be denied entry and keep my goods)?

Some products are illegal in some countries, or cannot be legally imported. If I attempt to carry such a product into the country, but then honestly declare it at the border (I would like to declare 10 kg of marijuana, sir), can I be prosecuted for attempted smuggling? Or will I simply be faced with the choice of turning around or forfeiting my goods and continue without trouble?

For the sake of this question, assume the product can be legally possessed in the country of origin.

For example, methyl alcohol is readily for sale in most/all EU countries, but cannot be taken by private persons into the Eurasian Economic Union (EAEU). If I carry it with me still and honestly declare it at the border when entering the EAEU, can the Russian or Belarusian police arrest me, or will I at worst have to continue without those goods?

Some products are illegal in some countries, or cannot be legally imported. If I attempt to carry such a product into the country, but then honestly declare it at the border (I would like to declare 10 kg of marijuana, sir), can I be prosecuted for attempted smuggling? Or will I simply be faced with the choice of turning around or forfeiting my goods and continue without trouble?

For the sake of this question, assume the product can be legally possessed in the country of origin.

For example, methyl alcohol is readily for sale in most/all EU countries, but cannot be taken by private persons into the Eurasian Economic Union (EAEU). If I carry it with me still and honestly declare it at the border when entering the EAEU at the Brest - Terespol border, can the Belarusian police arrest me for attempting to bring products across the border illegally, or will I at worst simply have to continue without those goods (or be denied entry and keep my goods)?